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TCP/IP is based on a four-layer reference model. All protocols that belong to the TCP/IP protocol suite are located in the top three lay...

Because TCP/IP networks are interconnected across the world, each computer on the Internet must have a unique address (called an IP addres...

What is a Router? A router is a device that forwards traffic between networks based on network layer information in the data and on rout...

What is IT-Security? IT-Security is not a product, it's a process. Don't think to buy a firewall which solves all your security p...

Internet Protocol version 6  ( IPv6 ) is the next-generation Internet Protocol version designated as the successor to IPv4, the first i...

Introduction If you are reading this, you are most likely connected to the Internet and there's a very good chance that you are us...

Many characteristics are commonly used to describe and compare various network designs. When you are determining how to build a network, e...

The key to utilizing multiple resources on a data network is having applications that are aware of these communication mechanisms. Althoug...

The first task in understanding how to build a computer network is defining what a network is and understanding how it is used to help a b...

From Wikipedia, the free encyclopedia Jump to: navigation , search CCNA is the acronym for the Cisco Certified Network Associate cer...